ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,744, issued on Jan. 13, was assigned to DNP FINE CHEMICALS Co. LTD. (Yokohama, Japan).
"Ink set" was invented by Yuji Makimoto (Yokohama, Japan), Syunya Morozumi (Yokohama, Japan) and Naoki Shiraishi (Yokohama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An ink set with which it is possible to effectively prevent bleeding of aqueous ink even in the case when printing takes place at high speed by means of an inkjet discharge recording method. This ink set includes a pretreatment ink and an aqueous ink and is used for a recording method in which the respective inks are discharged on a base material as an inkjet. The respective inks included i...